Loom filling fork delaying mechanism



Feb. 9, 1932. A. E. BENSON LOOM FILLING FORK DELAYING MECHANISM Filed Jan. 29. 1951 2 Sheets-Sheet 1 Nu mm mm lnvenTor. Aflhur E. Benson. ymwkm Feb. 9, 1932. A. E. BENSON LOOM FILLING FORK DELAYING MECHANISM Filed Jan. 29, 1931 2 Sheets-Sheet 2 n .wv m, ma m w r WWW T T AmiW VI .10

Patented FebaS, 1932 Unrrap STATES earnest PATENT oFFicE ARTHUR n. BENSON, or BOSTON, MASSACHUSETTS, nssrenon o nnernr, COBPORA- TION, OF HornnALn, essAoHUSETTs, A oonronearron 0F MAINE 1.00M FILLING non}; DELAYING MECHANISM Application filed January 29, 1931. Serial No. 512,019.

In the case of a loom provided with a filling fork which acts to stop the loom whenever the filling extending opposite the fork is absent as the result of breakage or exhaustion,

5 it frequently happens that when the loom is again started, the filling laid in the first pick is so loose or slack as to fail'to tilt the fork and thus again effect the stopping of the loom. I

The object of the present invention is to provide mechanism governed by a movement of a controller, such as the shipper, and acting upon or after stopping of the loom to tilt and hold the filling fork in its tilted position until after least one pick has been laid and beaten in and which will then act to release the filling fork so that thereafter it may function in the usual manner. Thus mechanism is provided by means of which stoppage of a loom by the filling fork is prevented after the loom is again started until at least the first pick has been laid and beaten in.

The nature and objects of the invention will appear more fully from the accompanying description and drawings and will be particularly defined in the claims.

As the general construction and operation of a loom provided with a filling fork mechanism and with a suitable controller or shipper for starting and stopping the loom is well known and familiar to those skilled in the art. it is only necessary here to illustrate and describe sufiicient portions of the mechanism of the loom with which a preferred form of the present invention is particularly concerned.

The drawings therefore show, only a portion of an ordinary type of such a loom with a preferred construction of the present invention embodied therein.

In the drawings:

Fig. 1 is a fragmentary top plan view of a portion of the loom.

Fig. 2 is a perspective view of a sliding latch forming a preferred embodiment of the invention and associated parts.

Fig. 3 is a left-hand side elevation of a portion of the mechanism shown in Fig. 2.

Fig.4 is a detail in vertical cross section taken on the line 44 of Fig. 3.

' In the construction illustrated, the'breast beam 1 of the loom has mountedthereon the usual filling fork slide 2 movable fore and aft of the 100m, and a knock-off lever 3 fulcrumed at 4. A controller shown as a shipper 5 projeots'up through the L-shaped slot 6 in the breast beam. When the filling fork slide is moved forward,-it swings the lever of the shorter arm of the L-shaped slot 6 and the controller then swings to the left in the slot-6 and through this movement acts to effect the stoppage of the loom all in a wellis fulcrumed at 10 in the rearward end of the filling fork slide. A weft hammer 11 vibrates or swings fore and aftduring the operation of the loom with its upper end extending into the filling fork Slide. 'This weft hammer'has pivoted thereto at 12 a hook member 13 guided on a cross bar 1 L on the filling fork slide 2. If the filling is properly laid by the shuttle 15 in front ofthe filling fork when'the shuttle is picked across the lay 16, the-filling. as the lay beats up,'engages the tines 8 of the filling fork and tilts the fork into a position wherev it will not engage the upwardly extending hooked end 17 of the hook member 13. If, on the other hand, the filling is broken. Xhausted or slack in front of the filling fork, the fork will not be tilted and. as the weft hammer swings forward, the hook 17 will catch in the looped end 9 of the fork and the fork slide 2 will be moved forward by the wefthammer, rocking the knockoff lever 3 and throwing-the controller 5 from its normal starting or running position into its stopping position thus effectingthe stopa ping of the loom. This construction and operation are all familiar and well known.

In the preferred embodiment of this invention. a latch, shown as a slide 18, is mounted to slide fore and aft on the fork slide. This latch, shown in perspective in Fig. 2, fits over the fork slide 2 which is preferably 3 and pushes the controller 5 rearward out flanged at its upper edges 19, and midway of its length the latch is provided with inwardly projecting lugs 20 riding beneath the flanges .19. At its rearward end the latch is provided with the inclined fingers 21 adapted to slide beneath the looped end 9 of the fork. Normally the latch stands in its forward position, as shown in Figs. 1 and 3, and in this position has no effect upon the fork. A lever indicated generally at 22 is fulcrumed at 23 on the shipper stand 24: and at its other end is bifurcated to engage a stud 25 projecting upward from the forward end of the latch 18. This lever stands in such a position with respect to the slot 6 that when the shipper 5 moves to its stopping position, shown in dotted lines in Fig. 1, the lever be swung thereby to the position also shown in dotted lines, thus sliding the latch 18 rearward and causing the inclined project-ions 21 to slide beneath the looped end 90f the fork and tilt and hold the fork in position where it cannot be engaged by the hook 17 of the weft hammer.

Thus it will be seen that upon or after the stopping of the loom by the movement of the controller or shipper to stopping position, the filling fork is rendered inoperative. The loom may then be turned over by hand to remove the pick and form the proper shed to receive the fresh pick. When the loom is started, the filling fork still remains inoperative, but when the first pick is laid and beaten in, the weft hammer moves forward and engages and moves the sliding latch 18 forward to inoperative position thus releasing the fork. For this purpose the weft hammer is provided with an upwardly extending projection 26 to engage the forward wall 27 of the sliding latch. Consequently when the next pick controlled by the fork is beaten in, the fork will be in its operative position and ready to stop the loom if the filling is absent or slack. But during at least the laying of one pick after the loom is started, the fork is held inoperative by the latch and is then restored to operative position in time to function with respect to the next pick from the opposite side of the loom.

Stoppage of the loom may result from the action of various mechanisms provided for that purpose. If, however, the 100111 is stopped by the action of the filling fork, it will be seen that when the controller or shipper 5 moves to its stopping position, the weft hammer will be in engagement with the fork and the fork slide will be in its forward position, as shown in Fig. 1. Consequently the latch 18 cannot be moved to tilt the fork. To take care of this the lever 22 is provided with a give-way construction and for thatpurpose is shown as made in two parts, 28 and 29, pivoted together at 30 and held rigid by the spring 31. If, now, the parts are in the position shown in Fig. 1, and the shipper 5 moves to stopping position, the lever 22 will give, the joint 30 moving rearward. When the loom is turned over by hand to find the pick, the weft hammer will swing rearward, the fork slide will move rearward, and thus the latch 18 will swing rearward about the pivotal point 30 under the action of the spring 31 and as the weft hammer releases the fork, the latch will move beneath and tilt the fork into its inoperative position. Consequently when the loom is started, the filling fork will remain inoperative until at least'the first pick is laid and beaten up.

Thus no matter .for what cause the loom is stopped, as upon the occasion of a breaking of a warp or upon failure of the shuttle to become properly boxed, or'upon failure of the filling or otherwise, the loom will not be stopped a second time if the filling is slack upon the first pick after the loom is started.

There is thus presented a simple and effective mechanism by means of which after the loom has been stopped the action of the filling fork is delayed for at least one pick and preferably by mechanism governed by the movement of the controller or shipper from its startingto its stopping position.

Having thus described the invention, what is claimed as new, and desired to be secured by Letters Patent, is:

1. In a loom, a filling fork slide, a filling fork pivoted thereon, a vibrating hammer cooperating with the filling fork and slide to stop the loom when the filling fork is not tilted on its pivot, a controller movable between loom starting and stopping positions, and means governed by movement of the controller acting upon or after stopping of the loom to tilt and hold the filling fork out of the path of the hammer and actuated by the hammer on its next forward movement to release the filling fork, whereby the filling fork will not be engaged by the hammer to stop the loom before the second pick after the loom is started.

' 2. In a loom, a filling fork slide, a filling fork pivoted thereon, a vibrating hammer cooperating with the filling fork and slide to stop the loom when the filling fork is not tilted on its pivot, acontroller movable be tween loom starting and stopping positions, and means governed by movement of the cont-roller to stopping position acting upon or after stopping of the loomto tilt and hold the filling fork out of the path of the hammer and actuated by the hammer on its next forward movement to release the filling fork, whereby the filling fork will not be engaged by the hammer to stop the loom before the second pick after the loom is started.

3. In a loom, a filling fork slide, a filling fork pivoted thereon, a vibrating hammer cooperating with the filling fork and slide to engage the hook and move the slide forward and stop the 100111 when the filling fork is not tilted on its pivot, a latch movably mounted on the slide acting when moved to latching construction yielding when the movement 'of the shipper to stopping position 1s caused by position to tilt the fork and lock it in tilted the cooperative action of the filling fork and position, a controller movable between loom hammer.

starting and stopping positions, and means governed by the controller when moved to stopping position to move the latch to latching position, the hammer on its next forward movement acting to move the latch to forkreleasing position whereby the filling fork cannot be engaged by the hammer to stop the loom before the second pick after the loom is started.

4. In a loom, a filling fork slide, a'filling fork pivoted thereon, a vibrating hammer cooperating with the filling fork and slide to stop the loom when the filling fork is'not tilted on its pivot, and means acting upon or after stopping of the loom for holding the filling fork out of cooperation with the hammer during the first pick from the opposite side of the loom after the loom is again started and for restoring the filling fork into cooperative relation with the hammer before the second pick from the opposite side of the loom takes place.

5. In a loom, a filling fork slide, a filling fork pivoted thereon, vibrating hammer acting to engage the fork and move the slide forward to stop the 100m when the filling fork is not tilted on its pivot, a latch movably mounted on the slide, acting when moved to latching position to tilt the fork and lock it in tilted position, a controller movable between loom starting and stopping positions, a lever connected to the latch actuated by movement of the controller to stopping position to. move the latch to latching position, the hammer acting ongits next forward movement to move the lat o releasing position whereby the filling f x hammer to stop the loom before the second ick after the loom is again started.

6. In a loom, the construction defined in claim 5, in which the lever is provided with a give-way construction yielding when the movement of the controller to stopping position is caused by the cooperative action of the filling fork and hammer.

'1'. In a loom. a filling fork slide, a filling fork pivoted thereon, a vibrating hammer acting to engage the fork and move the slide forward to stop the loom when the filling fork is not tilted on its pivot, a latch slidably mounted on the slide acting when moved rearward to tilt the fork and lock it in tilted position and released by the hammer upon the forward movement thereof, a shipper movable between loom starting and stopping positions, a lever connected to the latch and moved by the shipper upon its movement to stopping position to move the latch rearward.

8. In a loom, the construction defined in claim 5, in which the lever is formed in two springconnected parts to provide a give-way In testimony whereof, I name to this specification.

ARTHUR E. BENSON.

ill not be engaged by the signed my 

